Thermodynamics: An Engineering Approach
9th Edition
ISBN: 9781259822674
Author: Yunus A. Cengel Dr., Michael A. Boles
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 12.6, Problem 70P
What is the error involved in the (a) enthalpy and (b) internal energy of CO2 at 350 K and 10 MPa if it is assumed to be an ideal gas?
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During an adiabatic expansion the temperature of 0.450 mole of Argon (Ar) drops from 50 oC to 10.0 oC. The argon may be treated as an ideal gas.(a) Draw a p-V diagram for this process.(b) How much work does the gas do?(c) What is the change in internal energy of the gas?
uestion 4:
(a) An 88-litre gas cylinder is filled with propane gas at a pressure of 1.15 MPa
and 18°C. The propane is used to fuel a gas burner. After some time, the
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mass of propane used. The molar mass of propane is 44 g/mole.
(b) A piston-cylinder device filled with air at 365 kPa and 12°C, has an initial volume of
1.3 litres. The air is expanded at constant pressure to a volume of 3.6 litres and 516°C.
Determine the amount of heat and work involved in this process and state whether the
heat and work are into, or out of the gas.
Two insulated cylinders A and B with volumes VA = 1.2 m³ and VB = 6.4 m³ contain chlorine gas at different pressures and temperatures. The cylinders are insulated (no heat is lost to or gained
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PA= 4.0 x 105 N/m2, TA= 250 K, PB = 2.5 x 105 N/m², Tg = 580 K.
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valve
K
TEACHER
(a) Assuming there is no change in the temperatures of the containers themselves, determine the final temperature of the gas in the two cylinders. The atomic mass of chlorine gas is 35.4527
U.
(b) Determine the final pressure.
N/m²
Chapter 12 Solutions
Thermodynamics: An Engineering Approach
Ch. 12.6 - What is the difference between partial...Ch. 12.6 - Consider the function z(x, y). Plot a differential...Ch. 12.6 - Consider a function z(x, y) and its partial...Ch. 12.6 - Prob. 4PCh. 12.6 - Prob. 5PCh. 12.6 - Consider a function f(x) and its derivative df/dx....Ch. 12.6 - Conside the function z(x, y), its partial...Ch. 12.6 - Consider air at 350 K and 0.75 m3/kg. Using Eq....Ch. 12.6 - Consider air at 350 K and 0.75 m3/kg. Using Eq....Ch. 12.6 - Nitrogen gas at 800 R and 50 psia behaves as an...
Ch. 12.6 - Consider an ideal gas at 400 K and 100 kPa. As a...Ch. 12.6 - Using the equation of state P(v a) = RT, verify...Ch. 12.6 - Prove for an ideal gas that (a) the P = constant...Ch. 12.6 - Verify the validity of the last Maxwell relation...Ch. 12.6 - Verify the validity of the last Maxwell relation...Ch. 12.6 - Show how you would evaluate T, v, u, a, and g from...Ch. 12.6 - Prob. 18PCh. 12.6 - Prob. 19PCh. 12.6 - Prob. 20PCh. 12.6 - Prove that (PT)=kk1(PT)v.Ch. 12.6 - Prob. 22PCh. 12.6 - Prob. 23PCh. 12.6 - Using the Clapeyron equation, estimate the...Ch. 12.6 - Prob. 26PCh. 12.6 - Determine the hfg of refrigerant-134a at 10F on...Ch. 12.6 - Prob. 28PCh. 12.6 - Prob. 29PCh. 12.6 - Two grams of a saturated liquid are converted to a...Ch. 12.6 - Prob. 31PCh. 12.6 - Prob. 32PCh. 12.6 - Prob. 33PCh. 12.6 - Prob. 34PCh. 12.6 - Prob. 35PCh. 12.6 - Prob. 36PCh. 12.6 - Determine the change in the internal energy of...Ch. 12.6 - Prob. 38PCh. 12.6 - Determine the change in the entropy of helium, in...Ch. 12.6 - Prob. 40PCh. 12.6 - Estimate the specific heat difference cp cv for...Ch. 12.6 - Derive expressions for (a) u, (b) h, and (c) s for...Ch. 12.6 - Derive an expression for the specific heat...Ch. 12.6 - Derive an expression for the specific heat...Ch. 12.6 - Derive an expression for the isothermal...Ch. 12.6 - Prob. 46PCh. 12.6 - Show that cpcv=T(PT)V(VT)P.Ch. 12.6 - Show that the enthalpy of an ideal gas is a...Ch. 12.6 - Prob. 49PCh. 12.6 - Show that = ( P/ T)v.Ch. 12.6 - Prob. 51PCh. 12.6 - Prob. 52PCh. 12.6 - Prob. 53PCh. 12.6 - Prob. 54PCh. 12.6 - Prob. 55PCh. 12.6 - Does the Joule-Thomson coefficient of a substance...Ch. 12.6 - The pressure of a fluid always decreases during an...Ch. 12.6 - Will the temperature of helium change if it is...Ch. 12.6 - Estimate the Joule-Thomson coefficient of...Ch. 12.6 - Estimate the Joule-Thomson coefficient of...Ch. 12.6 - Prob. 61PCh. 12.6 - Steam is throttled slightly from 1 MPa and 300C....Ch. 12.6 - What is the most general equation of state for...Ch. 12.6 - Prob. 64PCh. 12.6 - Consider a gas whose equation of state is P(v a)...Ch. 12.6 - Prob. 66PCh. 12.6 - What is the enthalpy departure?Ch. 12.6 - On the generalized enthalpy departure chart, the...Ch. 12.6 - Why is the generalized enthalpy departure chart...Ch. 12.6 - What is the error involved in the (a) enthalpy and...Ch. 12.6 - Prob. 71PCh. 12.6 - Saturated water vapor at 300C is expanded while...Ch. 12.6 - Determine the enthalpy change and the entropy...Ch. 12.6 - Prob. 74PCh. 12.6 - Prob. 75PCh. 12.6 - Prob. 77PCh. 12.6 - Propane is compressed isothermally by a...Ch. 12.6 - Prob. 81PCh. 12.6 - Prob. 82RPCh. 12.6 - Starting with the relation dh = T ds + vdP, show...Ch. 12.6 - Using the cyclic relation and the first Maxwell...Ch. 12.6 - For ideal gases, the development of the...Ch. 12.6 - Show that cv=T(vT)s(PT)vandcp=T(PT)s(vT)PCh. 12.6 - Temperature and pressure may be defined as...Ch. 12.6 - For a homogeneous (single-phase) simple pure...Ch. 12.6 - For a homogeneous (single-phase) simple pure...Ch. 12.6 - Prob. 90RPCh. 12.6 - Prob. 91RPCh. 12.6 - Estimate the cpof nitrogen at 300 kPa and 400 K,...Ch. 12.6 - Prob. 93RPCh. 12.6 - Prob. 94RPCh. 12.6 - Prob. 95RPCh. 12.6 - Methane is to be adiabatically and reversibly...Ch. 12.6 - Prob. 97RPCh. 12.6 - Prob. 98RPCh. 12.6 - Prob. 99RPCh. 12.6 - An adiabatic 0.2-m3 storage tank that is initially...Ch. 12.6 - Prob. 102FEPCh. 12.6 - Consider the liquidvapor saturation curve of a...Ch. 12.6 - For a gas whose equation of state is P(v b) = RT,...Ch. 12.6 - Prob. 105FEPCh. 12.6 - Prob. 106FEP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Argon gas is contained in a cylinder fitted with a frictionless piston. Initially, the cylinder contains 200 L of Argon at 140 kPa and 10o C. The gas is then compressed in a polytropic process according to the relationship Pvn = C until the final pressure and temperature are 700 kPa and 180o C respectively. For Argon; R = 0.2081 kJ/kg.K and cv = 0.3122 kJ/kg.K. i) Sketch the system and the details of the process. ii) Show the process on a P-v diagram iii) Determine the polytropic exponent, n iv) Calculate the work involved during the process [kJ] v) Calculate the heat transfer during this process [kJ]arrow_forwardOnce upon a time, an engineering is conducting an experiment wherein he uses 10 moles of a gas. He then places it in a constant volume vessel. At start the gas is at P = 0.5 bar and T =300 K and the container is also at T = 300 K. He decided to place it in a furnace, where its surroundings are at a constant T = 600 K. It was left overnight in the furnace until both the container and the gas inside it reach thermal equilibrium with the surroundings. He assumed an ideal gas for this experiment at the pressures attained throughout this process, and has a constant heat capacity of CV* = 2.5R. The container itself has a mass of 10 kg (not including the mass of the gas inside) and a heat capacity of CV = 1.5 J/g - K. ● Find the heat added to the gas. a. 62.4 kJ b. 46.4 kJ c. 90.4 kJ d. 87.4 kJ e. none of these Find the heat added to the container. a.588kJ b. 638 kJ c. 1457 kJ d. 3465 kJ Find the change in entropy of the gas a. 0.14 kJ/K b.0.3 kJ/K c. 0.78 kJ/K Find the change in entropy of…arrow_forwardSteam at a pressure of 3.5 MPa is known to have a specific volumeof 50 x10−3 m3Kg. What is the specific enthalpy?arrow_forward
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- Express the Joule coefficient and the Joule – Thomson coefficient as its value for an ideal gas.arrow_forwardThere are 1.5 kgm of gas for which R=0.377kJ/kg-K and k=1.3 that undergo an isometric process from an initial state of 550kPa and 60C. During the process there are 1500kJ of heat removed from the gas. Find the change in enthalphy (kJ)arrow_forward(5) An insulated piston-cylinder device contains 15 L of saturated liquid water at a constant pressure of 950 kPa. Water is stirred by a paddle wheel while a current of 15 A flows for 28 min through a resistor placed in the water. If 64% of the liquid is evaporated during this constant pressure process and the paddle-wheel work amounts to 600 kJ, determine the voltage of the source. Also, show the process on a P-v diagram with respect to saturation lines. H2O P= constant We Wsharrow_forward
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